Potassium Phosphate, Tribasic → 5-[3-(2-Ethyl-3-formylphenyl)-1,2,4-thiadiazol-5-yl]-2-[(1-methylethyl)oxy]benzonitrile

HRID 1942620Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1942620
Br[C:2]1[N:6]=[C:5]([C:7]2[CH:8]=[CH:9][C:10]([O:15][CH:16]([CH3:18])[CH3:17])=[C:11]([CH:14]=2)[C:12]#[N:13])[S:4][N:3]=1.[CH2:19]([C:21]1[C:28](B2OC(C)(C)C(C)(C)O2)=[CH:27][CH:26]=[CH:25][C:22]=1[CH:23]=[O:24])[CH3:20].P([O-])([O-])([O-])=O.[K+].[K+].[K+]>CN(C)C=O.O.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:19]([C:21]1[C:22]([CH:23]=[O:24])=[CH:25][CH:26]=[CH:27][C:28]=1[C:2]1[N:6]=[C:5]([C:7]2[CH:8]=[CH:9][C:10]([O:15][CH:16]([CH3:18])[CH3:17])=[C:11]([CH:14]=2)[C:12]#[N:13])[S:4][N:3]=1)[CH3:20]

Komponenten

8

Edukt 3

HCID 62657Potassium Phosphate, TribasicHCID 584940852-Ethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehydeHCID 669817575-(3-Bromo-1,2,4-thiadiazol-5-yl)-2-[(1-methylethyl)oxy]benzonitrile

Produkt 1

HCID 866590045-[3-(2-Ethyl-3-formylphenyl)-1,2,4-thiadiazol-5-yl]-2-[(1-methylethyl)oxy]benzonitrileAusbeute 65,6 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 178418397HCID 178418397, VerbindungKatalysatorHCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

To a solution of 5-(3-bromo-1,2,4-thiadiazol-5-yl)-2-[(1-methylethyl)oxy]benzonitrile (D44) (550 mg), 2-ethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (463 mg) and tripotassium phosphate (1080 mg) in N,N-dimethylformamide (DMF) (4 mL) and water (1.000 mL) stirred under nitrogen was added Pd(Ph3P)4 (196 mg). The reaction was sealed and heated under microwave at 120° C. for 15 min. After cooling, the reaction mixture was diluted with ethyl acetate (20 mL), washed with water (2*8 mL), dried over sodium sulphate, concentrated and purified by column chromatography to afford 5-[3-(2-ethyl-3-formylphenyl)-1,2,4-thiadiazol-5-yl]-2-[(1-methylethyl)oxy]benzonitrile (D46) (420 mg) as a solid. MS (ES): C21H19N3O2S requires 377. found 378.0 (M+H+).

Aufarbeitung

  1. customThe reaction was sealed
  2. temperatureAfter cooling
  3. washwashed with water (2*8 mL)
  4. dry with materialdried over sodium sulphate
  5. concentrationconcentrated
  6. custompurified by column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-127cdae7cb174c06b7caddda40e9c084
Quelldatensatz
uspto-grants-2013_03
Patentnummer
US08389508B2

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